I'm pretty aware of cloning tools and used them myself often...
Yeah, this is more what I've been talking about. But I have not seen anyone doing it with much success yet - it still seems to me that the most often cited thing would be like "new machine, fresh install". Has been like that in Windows land for ages - but I'd happily be proven wrong, maybe they have sorted that out by now.Chargable solutions "Casper disk backup" will run like an Apple timemachine backup, running a live backup that you can switch out and boot another machine from with ease.
Anyhow, this is something that really couldn't be easier than in Apples ecosystem. Clone drive (using whatever tool, there's a galore of free options), boot more or less any other Mac straight from it. The only two exeptions being way too old systems or systems not compatible with Mojave (but all more or less recent Macs are, plus, most people are still sticking with Sierra or High Sierra).
In a nutshell, I could simply clone my Mac Pros drive and head over to any studio running a Mac, boot from my clone and have everything 100% my way (sure, I would possibly have to install drivers for the used audio interface, but that's a matter of a minute), no restrictions or whatsoever. And in case my machine blew up, I'd get a new one, boot from my clone drive and be back up and running in literally no time (others than the time needed to get a new machine).